Corkscrew



FIG. 1 is an upper perspective view of the corkscrew showing my design;

FIG. 2 is a side elevation view thereof, an opposite side elevation view being a mirror image thereof;

FIG. 3 is a front elevation view thereof, a back elevation view being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines in FIG. 4 represent portions of the corkscrew that form no part of the claimed design. 

CLAIM The ornamental design for a corkscrew, as shown and described. 